isa/rv64mi/timer.S

   1 # See LICENSE for license details.
   2
   3 #*****************************************************************************
   4 # timer.S
   5 #-----------------------------------------------------------------------------
   6 #
   7 # Test timer interrupts.
   8 #
   9
  10 #include "riscv_test.h"
  11 #include "test_macros.h"
  12
  13 RVTEST_RV64M
  14 RVTEST_CODE_BEGIN
  15
  16 #define DELTA_T 5
  17
  18   li s8, 0         # number of taken timer interrupts
  19   li s9, 10        # how many interrupts to run for
  20
  21   .align 4
  22   csrr a0, mtime
  23   add a0, a0, DELTA_T
  24   csrw mtimecmp, a0
  25   li a0, MIP_MTIP
  26   csrs mie, a0
  27   csrs mstatus, MSTATUS_MIE
  28
  29   # advance an LFSR until the timer has fired enough times
  30   li s0, 1023
  31   li s4, 0
  32 1:srl s2,s0,3
  33   xor s2,s2,s0
  34   and s2,s2,1
  35   srl s0,s0,1
  36   sll s2,s2,9
  37   or  s0,s2,s0
  38   and s0, s0, 0x3FF
  39   add s4, s4, 1
  40   bltu s8, s9, 1b
  41
  42   # compute iteration count % 1023 without using REMU
  43   li s1, 1023
  44   bltu s4, s1, 2f
  45 1:sub s4, s4, s1
  46   bgeu s4, s1, 1b
  47 2:
  48
  49   # make sure the LFSR was computed correctly
  50   la s1, lfsr
  51   sll s4, s4, 2
  52   add s1, s1, s4
  53   lw s1, (s1)
  54   li TESTNUM, 2
  55   bne s0, s1, fail
  56
  57   RVTEST_PASS
  58
  59   TEST_PASSFAIL
  60
  61 mtvec_handler:
  62   li TESTNUM, 3
  63   csrr t0, mcause
  64   bgez t0, fail
  65
  66   sll t0, t0, 1
  67   addi t0, t0, -2*IRQ_M_TIMER
  68   bnez t0, fail
  69
  70   csrr t0, mtime
  71   addi t0, t0, DELTA_T
  72   csrw mtimecmp, t0
  73
  74   add s8, s8, 1
  75   eret
  76
  77 .data
  78 lfsr:
  79 .word 1023
  80 .word 511
  81 .word 255
  82 .word 127
  83 .word 63
  84 .word 31
  85 .word 15
  86 .word 7
  87 .word 515
  88 .word 769
  89 .word 896
  90 .word 448
  91 .word 224
  92 .word 112
  93 .word 56
  94 .word 540
  95 .word 782
  96 .word 903
  97 .word 963
  98 .word 993
  99 .word 1008
 100 .word 504
 101 .word 764
 102 .word 894
 103 .word 959
 104 .word 479
 105 .word 239
 106 .word 119
 107 .word 571
 108 .word 285
 109 .word 142
 110 .word 583
 111 .word 803
 112 .word 913
 113 .word 968
 114 .word 996
 115 .word 498
 116 .word 249
 117 .word 124
 118 .word 574
 119 .word 799
 120 .word 399
 121 .word 199
 122 .word 611
 123 .word 817
 124 .word 920
 125 .word 972
 126 .word 998
 127 .word 499
 128 .word 761
 129 .word 380
 130 .word 702
 131 .word 863
 132 .word 431
 133 .word 215
 134 .word 619
 135 .word 309
 136 .word 666
 137 .word 845
 138 .word 422
 139 .word 211
 140 .word 617
 141 .word 308
 142 .word 154
 143 .word 589
 144 .word 294
 145 .word 147
 146 .word 585
 147 .word 292
 148 .word 146
 149 .word 73
 150 .word 36
 151 .word 18
 152 .word 9
 153 .word 4
 154 .word 2
 155 .word 1
 156 .word 512
 157 .word 256
 158 .word 128
 159 .word 64
 160 .word 32
 161 .word 16
 162 .word 8
 163 .word 516
 164 .word 258
 165 .word 129
 166 .word 576
 167 .word 288
 168 .word 144
 169 .word 72
 170 .word 548
 171 .word 274
 172 .word 137
 173 .word 68
 174 .word 34
 175 .word 17
 176 .word 520
 177 .word 772
 178 .word 386
 179 .word 193
 180 .word 608
 181 .word 304
 182 .word 152
 183 .word 588
 184 .word 806
 185 .word 403
 186 .word 713
 187 .word 356
 188 .word 178
 189 .word 89
 190 .word 44
 191 .word 534
 192 .word 267
 193 .word 133
 194 .word 578
 195 .word 289
 196 .word 656
 197 .word 328
 198 .word 676
 199 .word 338
 200 .word 169
 201 .word 84
 202 .word 42
 203 .word 533
 204 .word 778
 205 .word 901
 206 .word 962
 207 .word 481
 208 .word 752
 209 .word 376
 210 .word 700
 211 .word 862
 212 .word 943
 213 .word 471
 214 .word 747
 215 .word 373
 216 .word 698
 217 .word 861
 218 .word 430
 219 .word 727
 220 .word 875
 221 .word 437
 222 .word 730
 223 .word 877
 224 .word 438
 225 .word 219
 226 .word 109
 227 .word 54
 228 .word 27
 229 .word 13
 230 .word 6
 231 .word 3
 232 .word 513
 233 .word 768
 234 .word 384
 235 .word 192
 236 .word 96
 237 .word 48
 238 .word 24
 239 .word 524
 240 .word 774
 241 .word 387
 242 .word 705
 243 .word 864
 244 .word 432
 245 .word 216
 246 .word 620
 247 .word 822
 248 .word 411
 249 .word 205
 250 .word 102
 251 .word 51
 252 .word 537
 253 .word 268
 254 .word 646
 255 .word 323
 256 .word 673
 257 .word 848
 258 .word 424
 259 .word 724
 260 .word 362
 261 .word 693
 262 .word 858
 263 .word 941
 264 .word 470
 265 .word 235
 266 .word 117
 267 .word 570
 268 .word 797
 269 .word 398
 270 .word 711
 271 .word 867
 272 .word 945
 273 .word 984
 274 .word 1004
 275 .word 1014
 276 .word 507
 277 .word 253
 278 .word 126
 279 .word 575
 280 .word 287
 281 .word 143
 282 .word 71
 283 .word 547
 284 .word 785
 285 .word 904
 286 .word 964
 287 .word 482
 288 .word 241
 289 .word 632
 290 .word 828
 291 .word 926
 292 .word 975
 293 .word 487
 294 .word 755
 295 .word 889
 296 .word 444
 297 .word 734
 298 .word 879
 299 .word 439
 300 .word 731
 301 .word 365
 302 .word 182
 303 .word 91
 304 .word 45
 305 .word 22
 306 .word 11
 307 .word 5
 308 .word 514
 309 .word 257
 310 .word 640
 311 .word 320
 312 .word 160
 313 .word 80
 314 .word 40
 315 .word 532
 316 .word 266
 317 .word 645
 318 .word 834
 319 .word 417
 320 .word 720
 321 .word 360
 322 .word 692
 323 .word 346
 324 .word 685
 325 .word 342
 326 .word 171
 327 .word 85
 328 .word 554
 329 .word 789
 330 .word 906
 331 .word 965
 332 .word 994
 333 .word 497
 334 .word 760
 335 .word 892
 336 .word 958
 337 .word 991
 338 .word 495
 339 .word 247
 340 .word 635
 341 .word 317
 342 .word 158
 343 .word 591
 344 .word 295
 345 .word 659
 346 .word 841
 347 .word 420
 348 .word 210
 349 .word 105
 350 .word 52
 351 .word 26
 352 .word 525
 353 .word 262
 354 .word 131
 355 .word 577
 356 .word 800
 357 .word 400
 358 .word 200
 359 .word 612
 360 .word 306
 361 .word 153
 362 .word 76
 363 .word 550
 364 .word 275
 365 .word 649
 366 .word 324
 367 .word 162
 368 .word 81
 369 .word 552
 370 .word 788
 371 .word 394
 372 .word 709
 373 .word 866
 374 .word 433
 375 .word 728
 376 .word 876
 377 .word 950
 378 .word 475
 379 .word 237
 380 .word 118
 381 .word 59
 382 .word 29
 383 .word 14
 384 .word 519
 385 .word 771
 386 .word 897
 387 .word 960
 388 .word 480
 389 .word 240
 390 .word 120
 391 .word 572
 392 .word 798
 393 .word 911
 394 .word 455
 395 .word 739
 396 .word 881
 397 .word 952
 398 .word 988
 399 .word 1006
 400 .word 1015
 401 .word 1019
 402 .word 509
 403 .word 254
 404 .word 639
 405 .word 319
 406 .word 159
 407 .word 79
 408 .word 39
 409 .word 531
 410 .word 777
 411 .word 388
 412 .word 194
 413 .word 97
 414 .word 560
 415 .word 280
 416 .word 652
 417 .word 838
 418 .word 419
 419 .word 721
 420 .word 872
 421 .word 948
 422 .word 474
 423 .word 749
 424 .word 374
 425 .word 187
 426 .word 93
 427 .word 46
 428 .word 535
 429 .word 779
 430 .word 389
 431 .word 706
 432 .word 353
 433 .word 688
 434 .word 344
 435 .word 684
 436 .word 854
 437 .word 427
 438 .word 213
 439 .word 618
 440 .word 821
 441 .word 922
 442 .word 973
 443 .word 486
 444 .word 243
 445 .word 633
 446 .word 316
 447 .word 670
 448 .word 847
 449 .word 423
 450 .word 723
 451 .word 873
 452 .word 436
 453 .word 218
 454 .word 621
 455 .word 310
 456 .word 155
 457 .word 77
 458 .word 38
 459 .word 19
 460 .word 521
 461 .word 260
 462 .word 130
 463 .word 65
 464 .word 544
 465 .word 272
 466 .word 136
 467 .word 580
 468 .word 290
 469 .word 145
 470 .word 584
 471 .word 804
 472 .word 402
 473 .word 201
 474 .word 100
 475 .word 50
 476 .word 25
 477 .word 12
 478 .word 518
 479 .word 259
 480 .word 641
 481 .word 832
 482 .word 416
 483 .word 208
 484 .word 104
 485 .word 564
 486 .word 282
 487 .word 653
 488 .word 326
 489 .word 163
 490 .word 593
 491 .word 808
 492 .word 916
 493 .word 458
 494 .word 741
 495 .word 882
 496 .word 441
 497 .word 220
 498 .word 622
 499 .word 823
 500 .word 923
 501 .word 461
 502 .word 230
 503 .word 115
 504 .word 569
 505 .word 284
 506 .word 654
 507 .word 839
 508 .word 931
 509 .word 977
 510 .word 1000
 511 .word 1012
 512 .word 506
 513 .word 765
 514 .word 382
 515 .word 703
 516 .word 351
 517 .word 175
 518 .word 87
 519 .word 555
 520 .word 277
 521 .word 650
 522 .word 837
 523 .word 930
 524 .word 465
 525 .word 744
 526 .word 884
 527 .word 442
 528 .word 733
 529 .word 366
 530 .word 695
 531 .word 859
 532 .word 429
 533 .word 214
 534 .word 107
 535 .word 53
 536 .word 538
 537 .word 781
 538 .word 390
 539 .word 195
 540 .word 609
 541 .word 816
 542 .word 408
 543 .word 716
 544 .word 870
 545 .word 435
 546 .word 729
 547 .word 364
 548 .word 694
 549 .word 347
 550 .word 173
 551 .word 86
 552 .word 43
 553 .word 21
 554 .word 522
 555 .word 773
 556 .word 898
 557 .word 449
 558 .word 736
 559 .word 368
 560 .word 184
 561 .word 604
 562 .word 814
 563 .word 919
 564 .word 971
 565 .word 485
 566 .word 754
 567 .word 377
 568 .word 188
 569 .word 606
 570 .word 815
 571 .word 407
 572 .word 715
 573 .word 357
 574 .word 690
 575 .word 345
 576 .word 172
 577 .word 598
 578 .word 299
 579 .word 149
 580 .word 586
 581 .word 805
 582 .word 914
 583 .word 457
 584 .word 228
 585 .word 114
 586 .word 57
 587 .word 28
 588 .word 526
 589 .word 775
 590 .word 899
 591 .word 961
 592 .word 992
 593 .word 496
 594 .word 248
 595 .word 636
 596 .word 830
 597 .word 927
 598 .word 463
 599 .word 231
 600 .word 627
 601 .word 825
 602 .word 412
 603 .word 718
 604 .word 871
 605 .word 947
 606 .word 985
 607 .word 492
 608 .word 758
 609 .word 379
 610 .word 189
 611 .word 94
 612 .word 559
 613 .word 279
 614 .word 651
 615 .word 325
 616 .word 674
 617 .word 337
 618 .word 680
 619 .word 852
 620 .word 426
 621 .word 725
 622 .word 874
 623 .word 949
 624 .word 986
 625 .word 1005
 626 .word 502
 627 .word 251
 628 .word 125
 629 .word 62
 630 .word 543
 631 .word 271
 632 .word 135
 633 .word 579
 634 .word 801
 635 .word 912
 636 .word 456
 637 .word 740
 638 .word 370
 639 .word 185
 640 .word 92
 641 .word 558
 642 .word 791
 643 .word 907
 644 .word 453
 645 .word 738
 646 .word 369
 647 .word 696
 648 .word 860
 649 .word 942
 650 .word 983
 651 .word 1003
 652 .word 501
 653 .word 762
 654 .word 893
 655 .word 446
 656 .word 735
 657 .word 367
 658 .word 183
 659 .word 603
 660 .word 301
 661 .word 150
 662 .word 75
 663 .word 37
 664 .word 530
 665 .word 265
 666 .word 132
 667 .word 66
 668 .word 33
 669 .word 528
 670 .word 264
 671 .word 644
 672 .word 322
 673 .word 161
 674 .word 592
 675 .word 296
 676 .word 660
 677 .word 330
 678 .word 677
 679 .word 850
 680 .word 425
 681 .word 212
 682 .word 106
 683 .word 565
 684 .word 794
 685 .word 909
 686 .word 454
 687 .word 227
 688 .word 625
 689 .word 824
 690 .word 924
 691 .word 974
 692 .word 999
 693 .word 1011
 694 .word 1017
 695 .word 508
 696 .word 766
 697 .word 895
 698 .word 447
 699 .word 223
 700 .word 111
 701 .word 55
 702 .word 539
 703 .word 269
 704 .word 134
 705 .word 67
 706 .word 545
 707 .word 784
 708 .word 392
 709 .word 708
 710 .word 354
 711 .word 177
 712 .word 600
 713 .word 812
 714 .word 918
 715 .word 459
 716 .word 229
 717 .word 626
 718 .word 313
 719 .word 156
 720 .word 590
 721 .word 807
 722 .word 915
 723 .word 969
 724 .word 484
 725 .word 242
 726 .word 121
 727 .word 60
 728 .word 542
 729 .word 783
 730 .word 391
 731 .word 707
 732 .word 865
 733 .word 944
 734 .word 472
 735 .word 748
 736 .word 886
 737 .word 443
 738 .word 221
 739 .word 110
 740 .word 567
 741 .word 795
 742 .word 397
 743 .word 198
 744 .word 99
 745 .word 561
 746 .word 792
 747 .word 908
 748 .word 966
 749 .word 483
 750 .word 753
 751 .word 888
 752 .word 956
 753 .word 990
 754 .word 1007
 755 .word 503
 756 .word 763
 757 .word 381
 758 .word 190
 759 .word 607
 760 .word 303
 761 .word 151
 762 .word 587
 763 .word 293
 764 .word 658
 765 .word 329
 766 .word 164
 767 .word 82
 768 .word 41
 769 .word 20
 770 .word 10
 771 .word 517
 772 .word 770
 773 .word 385
 774 .word 704
 775 .word 352
 776 .word 176
 777 .word 88
 778 .word 556
 779 .word 790
 780 .word 395
 781 .word 197
 782 .word 610
 783 .word 305
 784 .word 664
 785 .word 844
 786 .word 934
 787 .word 467
 788 .word 745
 789 .word 372
 790 .word 186
 791 .word 605
 792 .word 302
 793 .word 663
 794 .word 843
 795 .word 421
 796 .word 722
 797 .word 361
 798 .word 180
 799 .word 90
 800 .word 557
 801 .word 278
 802 .word 139
 803 .word 69
 804 .word 546
 805 .word 273
 806 .word 648
 807 .word 836
 808 .word 418
 809 .word 209
 810 .word 616
 811 .word 820
 812 .word 410
 813 .word 717
 814 .word 358
 815 .word 179
 816 .word 601
 817 .word 300
 818 .word 662
 819 .word 331
 820 .word 165
 821 .word 594
 822 .word 297
 823 .word 148
 824 .word 74
 825 .word 549
 826 .word 786
 827 .word 393
 828 .word 196
 829 .word 98
 830 .word 49
 831 .word 536
 832 .word 780
 833 .word 902
 834 .word 451
 835 .word 737
 836 .word 880
 837 .word 440
 838 .word 732
 839 .word 878
 840 .word 951
 841 .word 987
 842 .word 493
 843 .word 246
 844 .word 123
 845 .word 61
 846 .word 30
 847 .word 527
 848 .word 263
 849 .word 643
 850 .word 833
 851 .word 928
 852 .word 464
 853 .word 232
 854 .word 628
 855 .word 314
 856 .word 669
 857 .word 334
 858 .word 679
 859 .word 851
 860 .word 937
 861 .word 468
 862 .word 234
 863 .word 629
 864 .word 826
 865 .word 925
 866 .word 462
 867 .word 743
 868 .word 883
 869 .word 953
 870 .word 476
 871 .word 750
 872 .word 887
 873 .word 955
 874 .word 477
 875 .word 238
 876 .word 631
 877 .word 827
 878 .word 413
 879 .word 206
 880 .word 615
 881 .word 819
 882 .word 921
 883 .word 460
 884 .word 742
 885 .word 371
 886 .word 697
 887 .word 348
 888 .word 686
 889 .word 855
 890 .word 939
 891 .word 469
 892 .word 746
 893 .word 885
 894 .word 954
 895 .word 989
 896 .word 494
 897 .word 759
 898 .word 891
 899 .word 445
 900 .word 222
 901 .word 623
 902 .word 311
 903 .word 667
 904 .word 333
 905 .word 166
 906 .word 83
 907 .word 553
 908 .word 276
 909 .word 138
 910 .word 581
 911 .word 802
 912 .word 401
 913 .word 712
 914 .word 868
 915 .word 434
 916 .word 217
 917 .word 108
 918 .word 566
 919 .word 283
 920 .word 141
 921 .word 70
 922 .word 35
 923 .word 529
 924 .word 776
 925 .word 900
 926 .word 450
 927 .word 225
 928 .word 624
 929 .word 312
 930 .word 668
 931 .word 846
 932 .word 935
 933 .word 979
 934 .word 1001
 935 .word 500
 936 .word 250
 937 .word 637
 938 .word 318
 939 .word 671
 940 .word 335
 941 .word 167
 942 .word 595
 943 .word 809
 944 .word 404
 945 .word 202
 946 .word 613
 947 .word 818
 948 .word 409
 949 .word 204
 950 .word 614
 951 .word 307
 952 .word 665
 953 .word 332
 954 .word 678
 955 .word 339
 956 .word 681
 957 .word 340
 958 .word 170
 959 .word 597
 960 .word 810
 961 .word 917
 962 .word 970
 963 .word 997
 964 .word 1010
 965 .word 505
 966 .word 252
 967 .word 638
 968 .word 831
 969 .word 415
 970 .word 207
 971 .word 103
 972 .word 563
 973 .word 793
 974 .word 396
 975 .word 710
 976 .word 355
 977 .word 689
 978 .word 856
 979 .word 940
 980 .word 982
 981 .word 491
 982 .word 245
 983 .word 634
 984 .word 829
 985 .word 414
 986 .word 719
 987 .word 359
 988 .word 691
 989 .word 857
 990 .word 428
 991 .word 726
 992 .word 363
 993 .word 181
 994 .word 602
 995 .word 813
 996 .word 406
 997 .word 203
 998 .word 101
 999 .word 562
1000 .word 281
1001 .word 140
1002 .word 582
1003 .word 291
1004 .word 657
1005 .word 840
1006 .word 932
1007 .word 466
1008 .word 233
1009 .word 116
1010 .word 58
1011 .word 541
1012 .word 270
1013 .word 647
1014 .word 835
1015 .word 929
1016 .word 976
1017 .word 488
1018 .word 756
1019 .word 378
1020 .word 701
1021 .word 350
1022 .word 687
1023 .word 343
1024 .word 683
1025 .word 341
1026 .word 682
1027 .word 853
1028 .word 938
1029 .word 981
1030 .word 1002
1031 .word 1013
1032 .word 1018
1033 .word 1021
1034 .word 510
1035 .word 767
1036 .word 383
1037 .word 191
1038 .word 95
1039 .word 47
1040 .word 23
1041 .word 523
1042 .word 261
1043 .word 642
1044 .word 321
1045 .word 672
1046 .word 336
1047 .word 168
1048 .word 596
1049 .word 298
1050 .word 661
1051 .word 842
1052 .word 933
1053 .word 978
1054 .word 489
1055 .word 244
1056 .word 122
1057 .word 573
1058 .word 286
1059 .word 655
1060 .word 327
1061 .word 675
1062 .word 849
1063 .word 936
1064 .word 980
1065 .word 490
1066 .word 757
1067 .word 890
1068 .word 957
1069 .word 478
1070 .word 751
1071 .word 375
1072 .word 699
1073 .word 349
1074 .word 174
1075 .word 599
1076 .word 811
1077 .word 405
1078 .word 714
1079 .word 869
1080 .word 946
1081 .word 473
1082 .word 236
1083 .word 630
1084 .word 315
1085 .word 157
1086 .word 78
1087 .word 551
1088 .word 787
1089 .word 905
1090 .word 452
1091 .word 226
1092 .word 113
1093 .word 568
1094 .word 796
1095 .word 910
1096 .word 967
1097 .word 995
1098 .word 1009
1099 .word 1016
1100 .word 1020
1101 .word 1022
1102
1103 RVTEST_CODE_END